public class PC {
  CPU cpu;
  HardDisk HD;
  void setCPU(CPU cpu) {
    this.cpu=cpu;
  }
  void setHardDisk(HardDisk HD){
    this.HD=HD;
  }
  void show(){
    System.out.println("CPU速度："+cpu.getSpeed());
    System.out.println("硬盘容量："+HD.getAmount());
  }
}
